title: Mixed epithelial and stromal tumor of the kidney with elevated serum level of cancer antigen 125.
abstract: Mixed epithelial and stromal tumor of the kidney is a newly categorized lesion, with few reported cases. We report a rare case of a 45-year-old woman with a palpable abdominal mass and elevated serum level of serum cancer antigen 125, who was not receiving hormones or contraceptive agents. Abdominal magnetic resonance imaging revealed a large multilocular cystic tumor that arose in the left central kidney. Nephrectomy was performed under the initial impression of cystic renal cell carcinoma; however, a diagnosis of mixed epithelial and stromal tumor was confirmed according to pathological and immunohistochemical findings. Serum level of cancer antigen 125 returned to normal after 1 month postoperatively and no recurrence was found in the following 18 months.
authors.affiliation: Division of Plastic and Reconstructive Surgery, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
authors.forename: Chih-Hsin
authors.initials: CH
authors.lastname: Liu
authors.forename: Chia-Cheng
authors.initials: CC
authors.lastname: Yu
authors.forename: Chao-Ren
authors.initials: CR
authors.lastname: Chang
authors.forename: Tony T
authors.initials: TT
authors.lastname: Wu
authors.forename: Jong-Khing
authors.initials: JK
authors.lastname: Huang
mesh_terms: D018394:CA-125 Antigen / Q000097:blood; D002292:Carcinoma, Renal Cell / Q000097:blood / Q000473:pathology* / Q000601:surgery; D003937:Diagnosis, Differential; D004847:Epithelial Cells / Q000378:metabolism / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007680:Kidney Neoplasms / Q000097:blood / Q000473:pathology* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D018198:Mixed Tumor, Malignant / Q000097:blood / Q000473:pathology* / Q000601:surgery; D009392:Nephrectomy; D018201:Nephroma, Mesoblastic / Q000097:blood / Q000473:pathology* / Q000601:surgery; D007690:Polycystic Kidney Diseases / Q000473:pathology; D017154:Stromal Cells / Q000378:metabolism / Q000473:pathology; D016896:Treatment Outcome
chemical_list: D018394:CA-125 Antigen